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Unrated severityNVD Advisory· Published Jan 21, 2025· Updated Nov 3, 2025

CVE-2025-21566

CVE-2025-21566

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.1.0 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Affected products

2
  • Oracle Corporation/Mysql Serverv52 versions
    cpe:2.3:a:oracle:mysql_server:9.1.0_and_prior:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:oracle:mysql_server:9.1.0_and_prior:*:*:*:*:*:*:*range: *
    • (no CPE)range: <=9.1.0

Patches

Vulnerability mechanics

References

1

News mentions

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